臺灣博碩士論文加值系統

本文研製一部具功因校正的數位化直流電源供應器，硬體電路主要包括功因校正電路及相移式全橋電路。文中以積體電路UC3854作為功因校正的控制器，並使用數位訊號處理器TMS320LF2407A完成閉迴路控制。本文中針對相關原理及設計方法進行探討。最後完成一部輸出直流48V，輸出功率864W，輸入電源側功率因數0.99，且輸入電流諧波滿足EN-61000-3-2規範的電源供應器。實測的結果與理論分析相當符合，說明本文的可行性及正確性。

The thesis implements a digital DC power supply with power factor correction. The hardware circuit includes a power factor correction circuit and a phase-shift full-bridge circuit. In the thesis, a UC3854 is used to control the power factor of the input source. In addition, a TMS320LF2407A is used to execute the closed loop control algorithms. The detailed principles and design methods are included. Finally, a DC power supply with 48V/864W, 0.99 power factor, satisfactory EN-61000-3-2 Standards is implemented. Experimental results can validate the theoretical analysis to show the feasibility and correctness of the thesis.

摘 要 I
Abstract II
目錄 III
圖目錄 VI
表目錄 XI
符號索引 XII
第一章 緒論 1
1.1簡介 1
1.2文獻回顧 2
1.3內容大綱 4
第二章 系統介紹 5
2.1簡介 5
2.2系統架構 6
第三章 功因校正電路介紹 9
3.1簡介 9
3.2功率因數的定義 9
3.3功因校正的方法 12
3.4功因校正電路設計 19
3.4.1 基本原理 19
3.4.2 升壓型轉換器模式建立 21
3.4.3 功因校正電路模式建立 29
第四章 相移式全橋轉換器 33
4.1簡介 33
4.2電路架構 33
4.3工作原理 34
4.4小訊號模型建立 47
第五章 系統研製 54
5.1簡介 54
5.2功因校正電路設計 55
5.2.1 儲能電感設計 56
5.2.2 輸出電容設計 58
5.2.3 功率開關與輸出功率二極體設計 59
5.2.4 控制電路設計 60
5.2.4.1功率開關切換頻率設定 62
5.2.4.2檢知網路K1、K2、K3的設計 62
5.2.4.3前饋補償網路設計 65
5.2.4.4電壓控制器設計 67
5.2.4.5電流控制器設計 69
5.3 相移全橋轉換器電路設計 71
5.3.1 功率開關的選擇 72
5.3.2 高頻變壓器的設計 73
5.3.3 振盪箝制電路設計 76
5.3.4 諧振電感和阻隔電容設計 77
5.3.5 輸出整流濾波電路的設計 80
5.4回授電路設計 83
5.5驅動電路的設計 84
5.6輔助電源電路設計 85
第六章 數位訊號處理器 86
6.1簡介 86
6.2 軟體流程 89
6.2.1主程式 89
6.2.2 中斷服務副程式 92
6.2.3 相移控制實現方法 94
第七章 實測結果 96
7.1簡介 96
7.2實測結果 96
第八章 結論與建議 121
參考文獻 122
作者簡介 126

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